Wahoo wrote:
Dear All,
What is the name of sorting algorithm used in list (STL) class? and how it
work?
Thanks!!!
Best Regards,
Wahoo
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std::lists have a sort method, as demonstrated in another reply by Sharad.
In general you can sort any STL container with a random access iterator
using one of the algorithms listed below, declared in <algorithm>.
template<class RandomAccessIterator>
void sort(RandomAccessIterator first, RandomAccessIterator last);
template<class RandomAccessIterator, class Compare>
void sort(RandomAccessIterator first, RandomAccessIterator last,
Compare comp);
template<class RandomAccessIterator>
void stable_sort(RandomAccessIterator first, RandomAccessIterator last);
template<class RandomAccessIterator, class Compare>
void stable_sort(RandomAccessIterator first, RandomAccessIterator last,
Compare comp);
template<class RandomAccessIterator>
void partial_sort(RandomAccessIterator first,
RandomAccessIterator middle,
RandomAccessIterator last);
template<class RandomAccessIterator, class Compare>
void partial_sort(RandomAccessIterator first,
RandomAccessIterator middle,
RandomAccessIterator last,
Compare comp);
template<class InputIterator, class RandomAccessIterator>
RandomAccessIterator
partial_sort_copy(InputIterator first, InputIterator last,
RandomAccessIterator result_first,
RandomAccessIterator result_last);
template<class InputIterator, class RandomAccessIterator,
class Compare>
RandomAccessIterator
partial_sort_copy(InputIterator first, InputIterator last,
RandomAccessIterator result_first,
RandomAccessIterator result_last,
Compare comp);
As an example, consider the following:
#include <iostream>
#include <vector>
#include <iterator>
#include <algorithm>
using namespace std ;
int main()
{
vector<unsigned> v ;
unsigned i ;
for (i = 32; i > 0; i--)
v.push_back(i) ;
sort<vector<unsigned>::iterator>(v.begin(), v.end()) ;
copy(v.begin(), v.end(), ostream_iterator<unsigned>(cout, " ")) ;
cout << endl ;
return 0 ;
}
Alan
